private static void CharToKeyboardInput(char c, ref WinApi.INPUT input)
{
input.type = WinApi.INPUT_KEYBOARD;
input.union.keyboard.wVk = 0;
input.union.keyboard.wScan = c;
input.union.keyboard.dwFlags = WinApi.KEYEVENTF_UNICODE;
input.union.keyboard.time = 0;
input.union.keyboard.dwExtraInfo = UIntPtr.Zero;
}
public static async Task <bool> FeedTextAsync(string text, CancellationToken token)
{
await s_asyncLock.WaitAsync(token);
try
{
var foregroundWindow = WinApi.GetForegroundWindow();
WinApi.BlockInput(true);
try
{
var size = Marshal.SizeOf <WinApi.INPUT>();
var input = new WinApi.INPUT[1];
// feed each character individually and asynchronously
foreach (var c in text)
{
token.ThrowIfCancellationRequested();
if (WinApi.GetForegroundWindow() != foregroundWindow ||
IsAnyKeyPressed())
{
break;
}
if (c == '\n' || c == '\r')
{
// we need this for correctly handling line breaks
// when pasting into Chromium's <textarea>
SimulateKeyDown(WinApi.VK_RETURN);
SimulateKeyUp(WinApi.VK_RETURN);
}
else
{
CharToKeyboardInput(c, ref input[0]);
if (WinApi.SendInput((uint)input.Length, input, size) == 0)
{
break;
}
}
if (InputHelpers.AnyInputMessage(WinApi.QS_ALLINPUT))
{
await InputHelpers.TimerYield(token : token);
}
}
return(true);
}
finally
{
WinApi.BlockInput(false);
}
}
finally
{
s_asyncLock.Release();
}
}
public static async Task <bool> FeedTextAsync(string text, CancellationToken token)
{
await s_asyncLock.WaitAsync(token);
try
{
var foregroundWindow = WinApi.GetForegroundWindow();
WinApi.BlockInput(true);
try
{
var size = Marshal.SizeOf <WinApi.INPUT>();
var input = new WinApi.INPUT[1];
// feed each character individually and asynchronously
foreach (var c in text)
{
token.ThrowIfCancellationRequested();
if (WinApi.GetForegroundWindow() != foregroundWindow ||
IsAnyKeyPressed())
{
break;
}
CharToKeyboardInput(c, ref input[0]);
if (WinApi.SendInput((uint)input.Length, input, size) == 0)
{
break;
}
if (InputHelpers.AnyInputMessage(WinApi.QS_ALLINPUT))
{
await InputHelpers.TimerYield(token : token);
}
}
return(true);
}
finally
{
WinApi.BlockInput(false);
}
}
finally
{
s_asyncLock.Release();
}
}
